<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template v-slot="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="179px">
          <template v-slot="scope">
            <!-- 修改按钮 -->
            <el-tooltip
              effect="dark"
              content="修改角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip
              effect="dark"
              content="删除角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="primary"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 分配按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 用户分页功能 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 对话框内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户信息的对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="30%"
      @closed="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%"
      ><div>
        <p>当前的用户:{{ userInfo.username }}</p>
        <p>当前的角色:{{ userInfo.role_name }}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      // 校验邮箱合法性的规则
      var checkEmail = (rule, value, callback) => {
        // 验证邮箱的正则表达式
        const regEmail = /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
        if (regEmail.test(value)) {
          // 合法的邮箱
          return callback()
        }
        callback('请输入合法的邮箱')
      }
      // 校验手机号的合法性规则
      var checkMobile = (rule, value, callback) => {
        // 验证手机号的正则表达式
        const regMobie = /^[1][3,4,5,7,8][0-9]{9}$/
        if (regMobie.test(value)) {
          return callback()
        }
        callback('请输入合法的手机号')
      }
      return {
        //  获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前页数
          pagenum: 1,
          // 当前每页显示多少条数据
          pagesize: 2,
        },
        userlist: [],
        total: 0,
        // 控制用户对话框的显示与隐藏
        addDialogVisible: false,
        // 添加用户表单数据
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: '',
        },
        // 添加表单规则验证对象
        addFormRules: {
          username: [
            { required: true, message: '请输入用户名称', trigger: 'blur' },
            {
              min: 3,
              max: 10,
              message: '长度在 3 到 10 个字符',
              trigger: 'blur',
            },
          ],
          password: [
            { required: true, message: '请输入用户密码', trigger: 'blur' },
            {
              min: 3,
              max: 10,
              message: '长度在 3 到 10 个字符',
              trigger: 'blur',
            },
          ],
          email: [
            { required: true, message: '请输入邮箱号', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' },
          ],
          mobile: [
            { required: true, message: '请输入手机号', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' },
          ],
        },
        // 控制修改用户对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到的用户信息对象
        editForm: {},
        // 修改用户表单信息的验证规则对象
        editFormRules: {
          email: [
            { required: true, message: '请输入邮箱号', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' },
          ],
          mobile: [
            { required: true, message: '请输入手机号', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' },
          ],
        },
        // 设置分配角色的对话框显示与隐藏
        setRoleDialogVisible: false,
        // 需要被分配角色的用户信息
        userInfo: {},
        //所有角色的数据列表
        roleList: [],
        // 已选中的角色id值
        selectedRoleId: '',
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        const { data: res } = await this.$http.get('users', {
          params: this.queryInfo,
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取用户列表失败')
        }
        this.userlist = res.data.users
        this.total = res.data.total
        console.log(res)
      },
      // 监听pagesize改变的事件
      handleSizeChange(newSize) {
        console.log(newSize)
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听页码值改变的事件
      handleCurrentChange(newPage) {
        console.log(newPage)
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      // 监听switch开关状态的改变
      async userStateChanged(userinfo) {
        console.log(userinfo)
        const { data: res } = await this.$http.put(`users/${userinfo.id}/state/$
                                                                        {userinfo.mg_state}`)
        if (res.meta.status !== 200) {
          userinfo.mg_state = !userinfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
      },

      // 监听添加用户对话框清除关闭事件
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击按钮添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async (valid) => {
          if (!valid) return
          console.log(valid)
          //可以发起添加用户的网络请求
          const { data: res } = await this.$http.post('users', this.addForm)

          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败')
          }
          this.$message.success('添加用户成功')
          //  隐藏添加用户对话框
          this.addDialogVisible = false
          // 重新获取列表数据
          this.getUserList()
        })
      },
      // 点击按钮弹出修改用户信息的对话框
      async showEditDialog(id) {
        console.log(id)
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        console.log(res)
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交预验证
      editUserInfo() {
        this.$refs.editFormRef.validate(async (valid) => {
          if (!valid) return
          // 发起修改用户信息的数据请求
          const { data: res } = await this.$http.put(
            'users/' + this.editForm.id,
            {
              email: this.editForm.email,
              mobile: this.editForm.mobile,
            }
          )

          if (res.meta.status !== 200) {
            this.$message.error('更新用户信息失败')
          }

          //  隐藏添加用户对话框
          this.editDialogVisible = false
          // 重新获取列表数据
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新用户信息成功')
        })
      },
      // 点击删除按钮删除用户
      async removeUserById(id) {
        console.log(id)
        const confirmResult = await this.$confirm(
          '此操作将永久删除该用户, 是否继续?',
          '提示',
          {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning',
          }
        ).catch((error) => error)
        console.log(confirmResult)
        // 如果用户取消删除则返回字符串cancel
        // 如果用户确认删除则返回字符串confirm
        if (confirmResult == 'cancel') {
          return this.$message.info('已取消删除')
        }
        // 发起请求删除单个用户的数据请求
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
      },
      // 点击按钮弹出分配用户信息的对话框
      async setRole(userInfo) {
        this.userInfo = userInfo

        // 在打开对话框之前,获取所有的角色列表
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败')
        }
        // this.$message.success('获取角色列表成功')

        this.roleList = res.data
        this.setRoleDialogVisible = true
      },
      // 点击按钮分配角色
      async saveRoleInfo() {
        if (!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色')
        }

        // 获取数据分配角色
        const {
          data: res,
        } = await this.$http.put(`users/${this.userInfo.id}/role`, {
          rid: this.selectedRoleId,
        })

        if (res.meta.status !== 200) {
          return this.$message.error('更新用户角色失败')
        }

        this.$message.success('更新用户角色成功')

        this.getUserList()
        this.setRoleDialogVisible = false
      },
    },
  }
</script>

<style lang="less" scoped>
</style>